What alcoholic solution loosens the glue of the batterys?
Did you test the glue of the batterys with alcoholic solutions like 2-propanol?
It would be interesting to know if fooding the battery section with an alcoholic solution will loosen the glue. The solution has to solute the glue, but not react with the plastic casing of the batterys.
Apple's technicians have been told that the battery is not a replaceable part. Their solution is to replace the top case assembly, to which the battery is fixed.
If a chemical engineer were to analyse the adhesive and discover a solution that would not be exothermic I would consider using it.
IMnsHO encouraging a DIY to attempt this proces by experimentation with various solvents would be on the order of encouraging an amateur to work on a CRT--irresponsible and unprofessional.